Abstract
Electron scattering in the possible Δ1 models of the conduction band in germanium crystals formed by hydrostatic or uniaxial pressure is investigated. On the basis of the theory of anisotropic scattering, the temperature dependences of the anisotropy parameter of the relaxation times and electron mobility for these models under conditions of scattering at impurity ions, as well as at acoustic and intervalley phonons are obtained. Analysis of the temperature dependences indicates that, in the temperature range of 77–300 K, intervalley scattering becomes substantial. Only for the Δ1 model formed by uniaxial pressure along the crystallographic direction [100], the electron scattering at intervalley phonons, which correspond to the g transitions, is minor with respect to scattering at acoustic phonons (the intravalley scattering) and impurity ions.
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Original Russian Text © S.V. Luniov, O.V. Burban, P.F. Nazarchuk, 2015, published in Fizika i Tekhnika Poluprovodnikov, 2015, Vol. 49, No. 5, pp. 588–592.
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Luniov, S.V., Burban, O.V. & Nazarchuk, P.F. Electron scattering in the Δ1 model of the conduction band of germanium single crystals. Semiconductors 49, 574–578 (2015). https://doi.org/10.1134/S1063782615050140
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DOI: https://doi.org/10.1134/S1063782615050140